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A patient in the ICU initially startled every time the ventilator alarmed, but after several days, they sleep soundly through the noise. Which form of non-declarative learning does this represent?

You are advising a PA student who stays up all night studying for their neurology exam. Based on the principles of memory formation, why is sleep crucial for long-term retention of academic material?

The perception of pain is the result of a complicated neurologic pathway including transduction, transmission, and modulation of electrical signals. The stimulus of this complex pathway propagates from the peripheral nociceptors to the brain and is modulated by neurotransmitters. Due to the association of the limbic system with the pain-processing centers in the brain, there are four major psychological processes that directly impact pain perception. Which of the following is NOT one of the major psychological processes?

A 25-year-old concert pianist has practiced intensively since the age of 4. If an fMRI is performed while mapping the patient’s somatosensory and motor cortices, how will the cortical representation of their hands likely differ from a non-musician?

A patient with a right MCA stroke exhibits profound left-sided neglect, failing to dress the left side of their body and drawing all the numbers of a clock on the right side. They insist nothing is wrong. Why do right-hemisphere lesions produce more severe neglect syndromes than left-hemisphere lesions?

A veteran with PTSD is undergoing a novel therapeutic trial where they are asked to recall a traumatic memory while being administered propranolol (a beta-adrenergic antagonist). What is the neurobiological rationale/hypothesis for this treatment?

You are evaluating two patients with gait instability. Patient A worsens dramatically when eyes are closed (Romberg positive) and has absent Achilles reflexes. Patient B has equal instability with eyes open or closed and reports room-spinning vertigo. What are the most likely neurological impaired sites for Patient A and Patient B?

Following a traumatic brain injury, a patient is medically cleared but exhibits significant impulsivity, poor judgment, and an inability to follow a home exercise program. Which region of the brain is most likely affected?

A 32-year-old male sustains a stab wound resulting in a right-sided T10 spinal cord hemisection (Brown-Séquard syndrome). Which of the following constellations of physical exam findings is most consistent with this injury?

I have 345 mL of a 1.5 M NaCl solution. If I boil the water until the volume of the solution is 250 mL, what will the molarity of the solution be?